Refrigerating apparatus



Patented June 22, 1926.

UNITED STATES 1,.lsa9,..97- PATENT oFi-"icJi-:ig4

LESTER S. KEILHOLTZ, OF DAYTON, OHIO, ASSIGNOB TO DELCO-LIGHT COMPANY, 0F DAYTON, OHIO, A CORPORATION OF DELAWARE.

BFRIGEBATING APPARATUS.

Original application led December 31, 1923, Serial No. 683,589. Divided and ythis application tiled August 7,. 1924. Serial No. 730,726.

One object of this invention is to provide n a simple, quick and efficient method of assembling the cabinet.

Another object is to provide a Water drain pipe for an upper cold compartment which l] ments and the space outside thereof.

does not pass through the insulated compartment below and hence provides a simpler construction.

Another object is to provide improvements in the air circulation system` in the cold compartments.

Further `objects and advantages of the resent invention will be apparent from the ollowing description, reference being had to the accompanying preferred form of one embodiment of the present invention is clearly shown.

In thb drawings: y

' Fig. 1 is a vertical section through. a rerigerating cabinet embodying this invention. Fig. 2 shows on an enlar construction of the central Fig. 1; and

ig. 3 shows on an enlar construction of one of the si eflues shown in Eig. i.

ed scale, the ue shown in Throughout the several views like or simp ilar reference characters refer to like or similar parts.

Numeral 20 designates the heat-insulated upper cooling com artment containing the cooling unit 21; 22 is the lower heat-insulated food compartment,l and 23 `is the uninsulated bottom compartment adapted to contain the refrigerating machinery.\ Both of the heat-insulated compartments 20 and 22 are provided with sheet metal linings 25 and 26 respectively. These linings 25 and 26 are built up as separate unitary box-like structures having an front. The two separate and 26, with the iianged holes 31 and 32 cut `therein in their bottom and top walls res ectively for the air-circulation lues are st rigidly attached to the frame of the refrigerator in a suitable manner. i The holes open .easily removably secured in place.

drawings, wherein a' ed scale, the

` that it does not pass box-like structures 25- 3l are substantiall circular in shape while the holes`32 are e ongated and extend substantially the entire depth of the box-like structures 25 and 26. The short metalflues 34 and 35 are next inserted in the registering holes 31 and 32 in the upper and lower linings and hammered into snug engage-- nient with the anges thereof. Molten hydrolene or `other suitable material is next applied around the outside of the fiues 34 and 35 to giveV an absolutely air-tight sealed 'ont between the interior ofthe compart- Elongated section-removable lues telescope over the short sections 35 and are thus The i'ues 45 are provided at their upper end with defiectors 46 which prevent water and dirt from falling into the food compartment 22, and which are so bent as to deiect the up-flowing air along the lining 25. The' deflectors 46 are preferably of sheet metal 'and riveted or soldered to a down-turned ange on the lues 45 as clearly shown in the drawings.

Horizontal frame-members 54 at the rearand front of the cabinet, support the weight of coolin unit 21. Two supporting beams 55 exten across the to from members 54 and are suitably secure in, slots 56 cut in said members. f

One feature of this invention is the arrangement of the water drain pipe 40 *so through the lower comartment 22 at all. Since the compartment 20 is maintained at a lower temperature than compartment 22 and since the cold air circulates freely between these compartments throutglh the circulation lflues, the moisture in e air will b e condensed out to such an extent in compartment 20 that the air will be well above dew oint when in compartment 22, and hence it is necessary to provide a drainpipe for com artment 20 only. Pipe 40 leads downwar y and outwardly from a point substantially at the juncture of the side wall with the floor ofl 25 and thus entirely clears the lower lining 26. This is obviously a simple construction since tlie metal linings need be pierced and sealed at only one point. Preferabl the' lower portion of pipe 40 is detacha le at 41 immediately under the partition 51.

lining The cold air circulation system and the construction of the `Ilues is also a feature of this invent-ion.c Since the delectors 46 defiect the 11p-flowing air from the food compartment 22 along 'the lining 25, and since the coldest part of the compartment is below the cooling unit 2l, the cold air Will ypass downwardly' through Athe central yflue. 3ft into compartment 22 whence it circulates and flows upwardly through the lues 45, then along the Walls of lining to substantially the top of the unit 24. By this means, the air from the compartment will be di'- rected over the ent-ire surface of cooling 1,5 unit 2l, and the transference of heat through the insulating Walls of the cabinet will be lessened since the coldest air will not be in contact with the inner surfaces of the Wall of .the lining 25.

While the form of embodiment'of the present invention as herein disclosed constitutes ya preferred form, it is to be understood that other forms mightbe adopted,

messer all coming within the scope of the claims which follow.7

What is claimed is as follows:` 1. In a refrigerator having cooling and. food compartments, linings for saidV compartments each having an opening, a short Hue within said openings for providing an air passage between said compartments, and.

a relatively long flue having telescoping connection with said short flue.

2. In a refrigerator having cooling andl food compartments, linings yfor said com-A partments each having an opening, insulation between said linings and having anopening, a short Hue extending within the openings in said linings and providing a Wall for the opening in the insulation, and a relatively long flue having telescoping connection with said short Hue.

In testimony whereof l hereto ailix my signature. f

LESTER 5.,. KEILHOLTZ. 

